Premium
Dispersant‐free dyeing of polyester with temporarily solubilised azo disperse dyes from 1‐substituted‐2‐hydroxypyrid‐6‐one derivatives
Author(s) -
Lee J J,
Han N K,
Lee W J,
Choi J H,
Kim J P
Publication year - 2002
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/j.1478-4408.2002.tb00093.x
Subject(s) - polyester , dyeing , dispersant , clearance , chemistry , alkali metal , polymer chemistry , nuclear chemistry , organic chemistry , dispersion (optics) , medicine , physics , optics , urology
Four temporarily solubilised azo disperse dyes based on 1‐substituted‐2‐hydroxypyrid‐6‐one were synthesised and characterised. The dyes showed high extinction coefficients and had a yellow shade on polyester fabric. They were successfully applied to polyester without the use of dispersants and the optimum pH was found to be 5. It was found that the dyes could be alkali‐cleared due to ionisation of the dye under mild alkaline conditions. The dyes exhibited good to excellent fastness properties on the polyester fabric.